Allow /upgraderoom command without developer mode enabled (#30527)

* Allow /upgraderoom command without developer mode enabled

This will make the instructions for upgrading rooms for hydra a lot
more straightforward, so maybe let's do this at least while hydra
upgrades happen.

* Update test to match

* Unused imports

src/SlashCommands.tsx

@@ -148,7 +148,7 @@ export const Commands = [
         command: "upgraderoom",
         args: "<new_version>",
         description: _td("slash_command|upgraderoom"),
-        isEnabled: (cli) => !isCurrentLocalRoom(cli) && SettingsStore.getValue("developerMode"),
+        isEnabled: (cli) => !isCurrentLocalRoom(cli),
         runFn: function (cli, roomId, threadId, args) {
             if (args) {
                 const room = cli.getRoom(roomId);